Rib osteosarcoma in dogs is rare; however, when it does occur, it has a very high metastasizing rate. Up to 45% of all dogs diagnosed with rib osteosarcoma will have metastasized by the time the vets catch it. Osteosarcoma is a type of bone cancer that develops on the bone. As the bone is comprised of several kinds of tissue that can all be cancerous, vets have to be extremely cautious during diagnosis.
That said, osteosarcoma is more prevalent in larger breeds such as Springer Spaniels, Shar Peis, Giant Schnauzers, Rottweilers, Giant Pyrenees, Irish Setters, Rough Coated Collies, German Short-haired Pointers, British Bulldogs, Australian Shepherds, Dobermans, Bassett Hounds, Labrador Retrievers, and Golden Retrievers. Dogs with osteosarcoma are usually very young (around 2-4yrs) or approaching old age (7-9yrs).
The doctor may recommend a needle biopsy as the first step towards diagnosis. However, they will likely follow this up with CT scans as they are clearer and allow the doctor to determine the tumor’s location for surgical planning.
What Are The Signs and Symptoms of Rib Osteosarcoma in a Dog?
The most obvious sign of a possible tumor is a palpable lump on your dog’s chest. If the tumor is large, it could begin collapsing the lung causing your dog to have difficulty breathing. If the osteosarcoma is located on one of the first four ribs, your dog may experience some lameness in the forelimbs. The dog may also become lethargic, exhibiting less energy and enthusiasm than normal.
What Treatment Will My Vet Recommend?
Before surgery, your vet will need to carry out a series of tests to determine how healthy your dog is and if they are strong enough to go through surgery. These tests include preoperative blood work, urine tests, and chemistry profiles.
Once you have the green light, you can proceed with surgery. The dog will need to be kept off food and given a dose of Pepcid AC prior to surgery. Your dog will be prescribed pain medication for use during and after surgery. These include general anesthesia, analgesics, and anti-inflammatory medicines.
Though cancer can sometimes feel like a death sentence, there are dogs that pull through and go on to live happy and healthy lives. Even though rib osteosarcom in dogs is very agressive and the statistics are grim, Bear is a shining example of how a dog can not only survive rib osteosarcoma but thrive beyond all expectations. Read his story below, as told by his owner and our dear friend, Deb Salerno.
Bear’s Survivor Story
In 2015 Bear and I were on our way to qualifying for the agility Nationals. One night while grooming him, I felt a lump on his left side. The next day I called my veterinarian who had me bring him right in. After a needle aspiration showed suspicious cells, my vet conducted a biopsy and came back with a diagnosis every dog owner dreads. The results confirmed that Bear had osteosarcoma of the rib, one of the most aggressive cancers in dogs.
Right away, my vet made an appointment with the oncologist and surgeon. Bear went through surgery two days later; he had 2 ribs removed with clean margins. They gave us the prognosis of a couple of months, “if we were lucky”. We then went through six rounds of chemotherapy before getting introduced to an Integrated Oncologist. She gave me hope that Bear would live longer and was our partner in our fight against cancer for 5 1/2 years. She treated him with diet recommendations, supplements, and acupuncture. Additionally, she treated Bear like a king, which was very exciting for him. He loved all the attention and didn’t make a fuss about the needles at all. However, there was still something missing. After all, Bear was an athlete.
When we were certain the worst was behind us, Bear decided he wanted to run in agility again. Of course, I agreed! He joined the “I’m Not Dead Tour” with his friend Ethan and performed very well. Though he finally retired from agility at Westminster’s Master’s Championship in 2018, his athletic endeavors were far from over. He switched sports to CAT and Fast CAT. He even wanted to try dock diving but I wouldn’t let him (my protective instinct kicked in). I did let him swim in his lake as a compromise.
In December 2020 at 15 years old, Bear crossed the Rainbow Bridge on his terms. I continue to cherish the lessons he taught me: to live life to the fullest, follow your heart, and always have a smile on your face. He did.
Vets, specialists, and friends all mean well, but in my experience, you don’t have to blindly listen to their opinions. No one knows your pet the way you do. Whatever path you choose, is the right path. Take comfort in that.
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